Re-enable NativeAOT benchmarks that are currently not supported due to missing metadata

[adamsitnik]

There are currently multiple benchmarks with [AotFilter("Currently not supported due to missing metadata.")] filter applied: https://github.com/dotnet/performance/search?q=AotFilter

With dotnet/BenchmarkDotNet#1973 in theory some of these benchmarks could now work.

The person who is willing to work on that should re-enable these benchmarks (by removing the attribute), see if they work:

py .\scripts\benchmarks_ci.py -f nativeaot7.0 --filter '*ColdStartSerialization*' --bdn-arguments "--keepFiles true"

and if they don't, apply the necessary DynamicallyAccessedMembers attributes (dotnet/runtime#66085 (comment)).

If it's impossible to make it work with DAM, we most probably need to extend BDN to support rd.xml files provided by the user (dotnet/BenchmarkDotNet#1680), also suggested by @hez2010 in
https://github.com/dotnet/performance/pull/2328/files/3be06148aa1529c760deaa63d42cbde96a254152#r834076648

This would require finding the rd.xml file which is just next to project file:

https://github.com/dotnet/BenchmarkDotNet/blob/09d9396a7980dcb65be97169b8611c208af075a2/src/BenchmarkDotNet/Toolchains/NativeAot/Generator.cs#L185

and including it here:

https://github.com/dotnet/BenchmarkDotNet/blob/09d9396a7980dcb65be97169b8611c208af075a2/src/BenchmarkDotNet/Toolchains/NativeAot/Generator.cs#L188

and here:

https://github.com/dotnet/BenchmarkDotNet/blob/09d9396a7980dcb65be97169b8611c208af075a2/src/BenchmarkDotNet/Toolchains/NativeAot/Generator.cs#L153

[adamsitnik]

Update: #2341 has been merged, it contains dotnet/BenchmarkDotNet#1976 which means that if we want to use an rd.xml file, we can now very easily do that! kudos to @kant2002 !